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One of the primary objectives of Transportation Systems Management and Operation (TSM&amp;O) strategies is to optimize the capacity of existing transportation infrastructure by reducing congestion. Over the past decades, agencies and researchers investigated the use of various strategies such as deployment of advanced traveler information systems, ramp metering, surveillance through closed circuit television (CCTV) cameras, and synchronized signals to achieve this objective. Life cycle cost analysis (LCCA) of various alternative strategies has received particular attention to identify the strategy with the lowest cost. However, increasing concerns over the impacts of transportation systems on nearby communities as well as the environment are urging decision makers to consider the environmental impacts of various TSM&amp;O strategies in addition to user costs. Vehicle emissions are affected by various factors such as vehicle's speed, idling time, and acceleration, which in turn depend on the traffic activities of other vehicles and level of congestion. Changes in highway capacity and pavement condition have an impact on the level of user costs incurred by commuters. There is a lack of decision support systems that would allow decision makers to simultaneously compare environmental, social and economic impacts of TSM&amp;O strategies over their life cycle. The aim of this study is to address this gap in research.